TUMEI, Jeilan Cicilia; DOMU, Ichdar; SAMOSIR, Rosauli Novalina. Komparasi Pemahaman Konsep Persamaan Kuadrat antara Problem-Based Learning dan Pembelajaran Langsung. PESHUM : Jurnal Pendidikan, Sosial dan Humaniora, [S. l.], v. 5, n. 4, p. 9715–9728, 2026. DOI: 10.56799/peshum.v5i4.18301. Disponível em: https://al-haramjournal.co.id/PESHUM/article/view/18301. Acesso em: 7 aug. 2026.